Combined steam and water trap for steam-heating systems.



No. 844,105. PATENTED FEB. 12, 1907.

T. F. DEXTER. COMBINED STEAM AND WATER TRAP FOR STEAM HEATING SYSTEMS.

APPLICATION FILED NOV.25, 1905.

Ta VAcmu w Pym/=2 consists, essentially, in the combination, with the supply and return mains, of a steam-heatpartly in elevation and partly in section, of a portion of a steam'-hea;1ng system, showing UNITED STATES PATENT OFFICE. THOMAS F}. DEXTER, or PROVIDENCE, BHQDE'IISLANDL COMBINED STEAM AND WATER TRAP FOR STEAM-HEATING SYSTEMS.

No. s44,10p.

Specification of Letters Patent.

A plication filed November 25, 1905. Serial No. 289.066.

Patented Feb. 12, 1907.

To (all whom it may concern.-

Be it known that LTHOMAS F. DEXTER, a citizen of the United States of America, and a resident of Providence, in the county'of Providence and State of Rhode Island, have invented certain new and useful Improvements in Combined Steam and Water Traps for Steam-Heating Systems, of which the fol lowing is a specification. I 1

, My invention relates tosteam-heating systems wherein the heating is effected by means of steam or vapor having-a pressure, say, substantiallythe same as that of the atmosphere.

By'means otmy invention the-water of condensation from the heat-supply main is prevented from entering the heater or radiator, it being removed from the main and discharged into the exhaust or return main by gravity, a water seal being continuously maintained between the inlet and outlet pas'.

sages leading to and from the device, or, in other words, all the water of condensation in the steam-inlet main connected with the radiator falls by gravity from the main into a valveless Well or trap and overflows into the return-main, thereby automatically preventing both the accumulation of Water in said inlet-main and the flooding of the radiator.

, In carrying out my invention the latter ing system of a valveless trap device directly connected and in continuous open commune cation with said mains, and a small aux liary or by-pass connection in open communication with the inlet and outlet passages of said trap device, all as more specifically hereinaft-er set forth and claimed.

The accompanying drawing is a view,

my invention applied thereto.

111 the drawing, a indicates the steam-supply main for supplying exhaust steamorvapor to the hea-er or radiator h of a heating system, and b the return-main, adapted to conduct the Water of condensation from the said supply-main and radiator to a vacuum or circulating pump by gravity.

My invention resides, essentially, in the combination of ashort pipe or Well 0, having top and bottom members or'caps c 0', respectivelv, a valveless or *open pipe d, conhected with the lower end of the supply-pipe 'a and extending downwardly therefrom into I the said Well, a valveless overfloW- ipe f in continuous open communication with per end portion of the well and with said return-main b, and a by-pass connection e, having therein a vacuum-valve y,-so calledthe upthat is, any well-known valve device capable of adjustment so as to produce an open contracted passage theretbrough, (as, for example, in the valve patented to me October 10, 1905, No. 801 ,514)said pipe e being connected with the pipe (1 at a point above the well and to the overfloW-pipef, or it may be connected with'the main 1) direct, the result in either case-being the same-41; e., to admit vapor or air into the main 1), so as to prevent the vacuum induced by the 'ump from drawing the Water from the seal? t'he presence of such vapor or air in the return-main serving "to izqualize' the pressure therein and in the sea r By again referring to the drawing it will be seen that exhaust steam or vapor discharged into the supply and rising main'a enters the heater or radiator it through a controlling or stop valve m. The water of condensation flows from the base ofv the radiator via said valve 12 into the branch main or upright pipe I) and to the return-main b. The steam condensed. in the supply-main a falls via ipe (1 into the Well 0 and, using therein to the evel Z,

flows. therefrom unobstructedly into there- I turnmain b by gravity, substantially as hereinbefore set forth. I

I claim as my invention main and the exhaust or return main of a lowress'ure steam-heating system, of a valveess trap device or water seal in continuous open communication With said mains and located with respect to'them so that the water of condensation flo ws into and out of said trap by gravity, and a continuously-open by- 9 1. Thecombination with the steam-supply pass connection for the passage of air or vapor from the said steam-supply main into the return-main, substantially as described and .for the purpose hereinbefore set forth.

2. In a low pressure steam-heating'system, the combination with a heater or radiator, and steam supply and return mains connected therewith, of'a valveless Well constituting a water seal or trap device located'b'elow and being in continuous open communication with said supply-main, a connection in continuous open communication with the, said return-main and the u per portion'of the well, and a continuous y-open by-passconnection for permitting the passage of air and j Signed at Providence, Rhode Island, this vapor fIfiHIl the sup ly-nglain to th; retulrln- 24th day of November, 1905. main, st constructe an arran e so t ati T the Water'of condensation from iihe supply- THOMAS DEKTER' main flows into said Well by gravity and over- Witnesses: v flows therefrom into the return-main, sub- GEO. H. REMINGTON, stantially as hereinbefore described. 1' C. A. PEIRCE. 

